Apparatus for making pipes



Get 8, 3929. W. H. MlLLsPAuGH 1,730,459

APPARATUS FOR MAKING PIPES Original Filed March 16, 1926 I INVENTOR /4 ////'4m Mf/bpaqy/f vi 1'. L ATTORNE Patented ct. '8, 12%

WILLIAM H. MILLSPAUGE, OF SAiN'DUSKY, OHIO, ASSIGNOR TO THE PAPER AND TEX- TILE MACHINERY COMPANY, OF SANDUSKY, OHIO, A CORPORATION OF.OHIO

. R APPARATUS MAKING PIPES Original application filed March 16, 1926, Serial No.

1928. Serial are joined together, the bead of one pipe is placed in the bell of the adjacent pipe and: the joint is caulked with lead or other suitable packing. The usual construction of cast pipe has its annular bead extending beyond the outer peripheral surface of the pipe or, in other words, the outside diameter of ,the beadvis greater than the outside diameter ofthe cylindrical portionof the pipe. When such a pipe is cast centrifugally in a non-parting mold, the bead prevents the withdrawal "of the pipe longitudinally from the mold.

The invention has for its salient object to provide a tool for positioning a metal core in a centrifugal mold. I

"Further objects of .the invention will appear front the following specification taken in connection with the'drawings, which form a part of this application, and -in which Fig. 1 is a sectional elevation showing two pipe sections joined together;

Fig. 2 is a longitudinal sectional elevation showing a mold for a centrifugal casting machine and one means fol-positioning the metal core in the mold;

Fig. 3is a longitudinal sectional elevation of the centrifugal mold with the metalcore positioned therein and thefmetal cast in the mold;-

{core for forming anannular groove in the Pip and Fig. 5 is a sectional elevation broken away and showing a. slightly modified. form of metal core. Y

The inventionbriefly described consists of a tool particularly adapted for use in centrif ugal casting machines in positioning in a mold of such'a machine a ring for forming an annular bead on the article cast in the ma ch ine'.- In forming-the. bead the ring also 95,021. Divided and this application filed June 6, no. 283,215.

forms an annular groove around the article.

After the casting has been formed, the castv article and ring can be withdrawn longitudi nally from the mold and thereafter the ring can be sprung out or broken out of thegroove and removed therefrom.

pear from the following description. 1 In Fig. 1 there are shown two pipesA'and 'B. Each pipe has a bell 10 formed on one Further details of the invention will apend thereof and an annular bead 11 formed at the other end thereof, the intermediate portion or major portion-12 of'the pipe being substantially cylindrical. It will be noted that the outer surface of thesend portion oh the pipe adjacent the head 11 is, taperedtoward the axis vof the pipe as shown at 13 and it will be further noted that the outside diameter of the bead 11 is substantially the" same as the outside diameter of the cylindrical portion 12 of the pipe.

When the pipes or pipe sectionsare assembled as shown in Fig. 1, thebead 11 of one pipe is disposed within the bell 10 of the adjacent pipe 'and caulking 14 of lead or other suitable material is placed inside the bell to seal the joint.

Fig. 3 illustrates a metal flask or casing 20 of a centrifugalca sting machine having" an enlarged end 21 shaped to form the bell end of the pipe. A cap or plate 22 is secured to the end 21 and has an inwardly extending tubular portion 23 which supports a ,7

sand col-e24 adapted to coact with the end 21 of the mold and form the bell. The plate 22 and sand core 24 can be constructed and supported in any. .desired manner, for instance, as shown in my PatentNo. 1, .t8i ,872, 1 Fig. 4. is a perspective view of the metal\granted February 12,-19245. I

The opposite end of the flask 20 has .se-

cured thereto a plate 30 and-a metal core in the form of a split 'metal ring 31 is located secured. l 4

The core or ringillustrat'ed in Figs. 2 and 3 is formed of resilient material and has sufiicient resiliency-to hold it in its proper po-' sition and against movement by the molten metal.. This'ring preferably has a substanthe mold for determining the spacing of the core from the end of the mold.

2. Means for positioning a metal core in a mold, comprising a disk adapted to engage and move the core into the mold, and spacing means carried by the disk and engageable with an end of the mold for determining the spacing of the core from the end of the mold.

In witness whereof, I have hereunto set my hand this 5th day of June, 1928.

WILLIAM II.. MILLSPAUGH.

- metal core 31 from the end of the mold when,

the free ends of the members 42 engage the plate 30. After the ring or core has been positioned in the mold by means of the tool just described, the tool is withdrawn.

It will be evident from the foregoing description that when the molten metal is poured into the rotating flask 20,the metal will be thrown outwardly by centrifugal force and will form a centrifugal casting having the shapeand contour determined by the contour of the mold and in this instance, the casting will have an annular, tapered groove formed therein adjacent one end thereof. This tapered groove will in turn form a head 11 on the end of the pipe and the outside diameter of the bead will be the same as the outside diameter of the cylindrical portion of the pipe.

If desired, the mold may be so. constructed as to form a bead at the end of the pipe having a diameter slightly less than the out side diameter of the pipe and such a core is shown in Fig. 5. In this construction, as in the foregoing, the metal core consists of a split ring 50 formed of resilient material and having a substantially cylindrical outer surface 51. The inner wall of the flask 20 has anannular, inwardlv extending flange 52 which reduces the outer diameter of the beadformed on the end of the pipe.

After the casting formed in the centrifugal flask has cooled, the casting and ring can be withdrawn longitudinally from the mold, whereupon the metal core or split ring can be sprung. out of or, if, necessary, broken out of the groove.

Although one form of tool for inserting the ring and mold has been particularly shown and described, it will be understood thatthe invention is not limited to the particular characteristics of the tool illustrated, and

' that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, in thefolloWing claims.

What I claim is:

1. Meansfor positioning a metal core in a mold, comprising a member adapted to engage and move the core into the mold, and

as expressed spacing means engageable with an endof I 

